Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:31:03 2014 Optimize a model with 4657 rows, 2353 columns and 11520 nonzeros Presolve removed 48 rows and 0 columns Presolve time: 0.11s Presolved: 4609 rows, 2353 columns, 11472 nonzeros Variable types: 1 continuous, 2352 integer (2352 binary) Found heuristic solution: objective 0.7648056 Found heuristic solution: objective 0.7602764 Found heuristic solution: objective 0.6761520 Root relaxation: objective 9.011426e-03, 2752 iterations, 0.11 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00901 0 1740 0.67615 0.00901 98.7% - 0s H 0 0 0.5676142 0.00901 98.4% - 0s 0 0 0.01242 0 1272 0.56761 0.01242 97.8% - 0s 0 0 0.02832 0 972 0.56761 0.02832 95.0% - 1s H 0 0 0.5645440 0.02832 95.0% - 1s 0 0 0.03061 0 920 0.56454 0.03061 94.6% - 1s H 0 0 0.5619391 0.03061 94.6% - 1s H 0 0 0.5160605 0.03061 94.1% - 1s 0 0 0.04910 0 740 0.51606 0.04910 90.5% - 1s H 0 0 0.5088307 0.04910 90.4% - 1s H 0 0 0.5039080 0.04910 90.3% - 1s 0 0 0.05340 0 648 0.50391 0.05340 89.4% - 1s H 0 0 0.4273688 0.05340 87.5% - 1s 0 0 0.07999 0 447 0.42737 0.07999 81.3% - 2s H 0 0 0.4152772 0.07999 80.7% - 2s 0 1 0.08112 0 447 0.41528 0.08112 80.5% - 4s H 1 1 0.3781646 0.08112 78.5% 738 5s H 3 2 0.3338509 0.18480 44.6% 246 5s H 4 2 0.3283823 0.19179 41.6% 184 5s H 5 3 0.3114278 0.19182 38.4% 148 5s H 9 7 0.2947463 0.20018 32.1% 468 9s H 11 8 0.2946909 0.26531 10.0% 383 9s H 12 8 0.2857360 0.26689 6.60% 351 9s H 13 8 0.2780497 0.26949 3.08% 324 9s H 13 8 0.2694913 0.26949 0.00% 324 9s Cutting planes: Gomory: 1 Explored 13 nodes (22446 simplex iterations) in 9.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.694912643684e-01, best bound 2.694912643684e-01, gap 0.0%